UL 127-2008《工厂制壁炉》
1.1 These requirements cover factory-built fireplaces, including the fire chamber, chimney, roof assembly, and other related parts that are entirely factory-made and that are intended for unit assembly in the field.
1.2 These requirements cover factory-built fireplaces having a fire chamber intended to be operated either open to a room or, when equipped with doors, operated with the doors either open or closed.
1.3 These requirements cover factory-built fireplaces intended for use with either solid wood or coal fuels.
1.4 The factory-built fireplaces covered by these requirements are intended for installation in accordance with the National Fire Protection Association Standard for Chimneys, Fireplaces, Vents and Solid-Fuel Burning Appliances, NFPA 211, and in accordance with codes such as the BOCA Basic/National Code, the Standard Mechanical Code, and the Uniform Building Code.
1.5 As covered by these requirements, an air duct system portion of a circulating warm air type fireplace is